环北极地区多年冻土和地下冰状态图(V2)(1997)

Circum-Arctic map of permafrost and ground ice conditions (v2) (1997)


数据集包括: 1、permaice(冻土类型图) 2、subsea(海底界线矢量图)3、treeline(林线矢量图)4、nhipa(栅格图)5、llipa(栅格图)

Permaice包括属性字段:Num_code(冻土属性编码)

Combo(冻土属性)extent(冻土范围)content(含冰量)

属性对照如下:(1)冻土属性对照表:

0 (No information )

1 - chf (Continuous permafrost extent with high ground ice content and thick overburden)

2 - dhf (Discontinuous permafrost extent with high ground ice content and thick overburden )

3 - shf (Sporadic permafrost extent with high ground ice content and thick overburden )

4 - ihf (Isolated patches of permafrost extent with high ground ice content and thick overburden )

5 - cmf (Continuous permafrost extent with medium ground ice content and thick overburden )

6 - dmf (Discontinuous permafrost extent with medium ground ice content and thick overburden )

7 - smf (Sporadic permafrost extent with medium ground ice content and thick overburden )

8 - imf (Isolated patches of permafrost extent with medium ground ice content and thick overburden)

9 - clf (Continuous permafrost extent with low ground ice content and thick overburden )

10 - dlf (Discontinuous permafrost extent with low ground ice content and thick overburden )

11 - slf (Sporadic permafrost extent with low ground ice content and thick overburden )

12 - ilf (Isolated patches of permafrost extent with low ground ice content and thick overburden)

13 - chr (Continuous permafrost extent with high ground ice content and thin overburden and exposed bedrock )

14 - dhr (Discontinuous permafrost extent with high ground ice content and thin overburden and exposed bedrock )

15 - shr (Sporadic permafrost extent with high ground ice content and thin overburden and exposed bedrock )

16 - ihr (Isolated patches of permafrost extent with high ground ice content and thin overburden and exposed bedrock)

17 - clr (Continuous permafrost extent with low ground ice content and thin overburden and exposed bedrock )

18 - dlr (Discontinuous permafrost extent with low ground ice content and thin overburden and exposed bedrock )

19 - slr (Sporadic permafrost extent with low ground ice content and thin overburden and exposed bedrock)

20 - ilr (Isolated patches of permafrost extent with low ground ice content and thin overburden and exposed bedrock )

21 - g (Glaciers)

22 - r (Relict permafrost)

23 - l (Inland lakes )

24 - o (Ocean/inland seas )

25 - ld (Land)

(2)冻土范围对照表

c = continuous (90-100%)

d = discontinuous (50- 90%)

s = sporadic (10- 50%)

i = isolated patches ( 0 - 10%)

(3)含冰量对照表

h = high (>20% for "f" landform codes) (>10% for "r" landform codes)

m = medium (10-20%)

l = low (0-10%)

------------------------------------------------------------

Projection of the shapefiles is:

PROJCS["Sphere_ARC_INFO_Lambert_Azimuthal_Equal_Area",

GEOGCS["GCS_Sphere_ARC_INFO",

DATUM["Sphere_ARC_INFO", SPHEROID["Sphere_ARC_INFO",6370997.0,0.0]],

PRIMEM["Greenwich",0.0],

UNIT["Degree",0.0174532925199433]],

PROJECTION["Lambert_Azimuthal_Equal_Area"],

PARAMETER["False_Easting",0.0],

PARAMETER["False_Northing",0.0],

PARAMETER["longitude_of_center",180.0],

PARAMETER["latitude_of_center",90.0],

UNIT["Meter",1.0]]

Projection for the raster (*.byte) files is:

Projection: Lambert Azimuthal

Units: meters

Spheroid: defined

Major Axis: 6371228.00000

Minor Axis: 6371228.000

Parameters:

radius of the sphere of reference: 6371228.00000

longitude of center of projection: 0

latitude of center of projection: 90

false easting (meters): 0.00000

false northing (meters): 0.00000


本数据要求的引用方式 查看数据引用帮助 数据引用必读
数据的引用

O. Ferrians, J. A. Heginbottom, E. Melnikov, Tingjun Zhang, 冉有华. (2011). 环北极地区多年冻土和地下冰状态图(V2)(1997). 时空三极环境大数据平台,
[O., F., J. A. Heginbottom., E., M., Zhang, T., Ran, Y. (2011). Circum-Arctic map of permafrost and ground ice conditions (v2) (1997). A Big Earth Data Platform for Three Poles, ] (下载引用: RIS格式 | RIS英文格式 | Bibtex格式 | Bibtex英文格式 )

文章的引用

1. Zhang, T., J.A. Heginbottom, R.G. Barry, and J. Brown. 2000. Further Statistics on the Distribution of Permafrost and Ground Ice in the Northern Hemisphere. Polar Geog. 24(2): 126-131.( 查看 | Bibtex格式)

2. Brown, J., O.J. Ferrians, Jr., J.A. Heginbottom, and E.S. Melnikov.. 2002. Circum-Arctic Map of Permafrost and Ground-Ice Conditions. Version 2. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center.( 查看 | Bibtex格式)

使用本数据时必须引用“文章的引用”中列出的文献,并进行数据的引用


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License: This work is licensed under an Attribution 4.0 International (CC BY 4.0)


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East: -180.00 West: 180.00
South: 25.00 North: 90.00
数据细节
  • 大小: 23 MB
  • 浏览: 44878 次
  • 下载量: 611 次
  • 共享方式: 开放获取
  • 数据时间范围: 2019-05-12 至 2019-05-12
  • 元数据更新时间: 2021-04-19
联系信息
O. Ferrians   J. A. Heginbottom   E. Melnikov   Tingjun Zhang   冉有华  

分发方: 时空三极环境大数据平台

Email: poles@itpcas.ac.cn

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